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Volume 22 (1973)
- Issue 6 Pages 363-
- Issue 5 Pages 285-
- Issue 4 Pages 195-
- Issue 3 Pages 117-
- Issue 2 Pages 55-
- Issue 1 Pages 1-
Volume 22, Issue 3
Displaying 1-10 of 10 articles from this issue
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Shunsuke KOBAYASHI, Naomi NAGASAWA1973 Volume 22 Issue 3 Pages 117-125
Published: June 30, 1973
Released on J-STAGE: June 28, 2010
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Pure Gold Electrode and Pure Silver ElectrodeJiro KASHIMA, Fumio UMEMURA1973 Volume 22 Issue 3 Pages 126-132
Published: June 30, 1973
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSThis work presents the influence of heating an electrode on the spark phenomenon.Pure silver electrode and pure gold electrode, which are most difficult to be oxygenized, are heated to 600°C, and changes of spectral lines intensity and erosion amount are studied.In an atmosphere of argon lines intensity and erosion amount of both sample electrodes do not change between the electrode temperature 20°C-600°C.But in an atmosphere of oxygen or air they change between the same temperature range: lines intensity of silver electrode increase abruptly near the electrode temperature 170°C and 400°C, and get maximum at 470°C, ones of gold electrode get maximum near the electrode temperature 300°C.Erosion amount increases in accordance with lines intensity.From the fact that the change of lines intensity depends on the sort of atmosphric gas, we thought that the increase of lines intensity is due to the change of surface status i.e.the change of surface status, which is caused by the reaction with atmospheric gas, accelerates the erosion rate.View full abstractDownload PDF (951K) -
Yoshio MAEDA, Masaru INOUE1973 Volume 22 Issue 3 Pages 133-142
Published: June 30, 1973
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDescribed is a Fourier transform spectrometer system which is on-line connected with a minicomputer in the visible and near infrared regions.In order to cover a relatively short wavelength region (0.4, -2.3 μm), we adopted a polarization interferometer which comprises two sheet polarizers and a Babinet-Soleil compensator made of crystal quartz.The compensator moves continuously about 30 mm along the hypotenuse by a linear precision cam driver, which produces the optical path difference of 110 μm.The spectral resolution is better than 60 cm-1 at 1.5 μm.A PbS cell and a photomultiplier are employed alternately as a detector for this instrument in the near infrared and visible regions.A data processing is carried out by the minicomputer (HITAC 10) with 4 kilowords core memory and some interfaces.The signal from the detector, which is well known as an interferogram, is digitized.at a sampling rate of 1000 Hz, being averaged by multiple scanning.The stored interferogram is apodized and is Fourier transformed (D.F.T.) only for 60 seconds.The results of the computation are converted to analog signals and are fed to an X-Y pen recorder to give the spectrum.Owing to high efficiency of the optical system and the high S-N ratio, spectra of very low energy, e.g.the emission from thermally excited materials at about 100°C, were effectively obtained in short scanning time (1sec/1scan).The dispersion effect of Soleil compensator and its numerically correcting method are also mentioned.View full abstractDownload PDF (1247K) -
Kimitaka SATO, Shu'ichi FUNAKI1973 Volume 22 Issue 3 Pages 143-150
Published: June 30, 1973
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSX-ray photoelectron spectrometry (XPS or ESCA), a new technique of physical analysis, was applied to the analysis of surface film (thickness;about300Å) of an electrolytic chromic acid conversion coating steel (Tin Free Steel);it is estimated that the film is made up of a hydrated chromium oxide and a metallic chromium layers.Photoelectron spectrum was measured for each new surface obtained by sputtering the film, in order to obtain analytical information of the depth direction for the film.The state of the sputtered surface of the film was compared to each other after making to replica, using an electron microscopic observation.The variation of the peak intensities for CrL3, FeL3 and OK with each sputtering time of the film showed an interesting behavior, by which the structure of the film was discussed.This investigation suggests that new analytical information may be obtained for the surface of steel by an X-ray photoelectron spectrometric analysis.View full abstractDownload PDF (2211K) -
Akio URUSHIYAMA, Yoshihiro ITOH, Masayoshi NAKAHARA, Yukio KONDO1973 Volume 22 Issue 3 Pages 151-155
Published: June 30, 1973
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSA low temperature microspectrophotometer consisted of a Hitachi EPS-3T spectrophotometer and a specially designed stainless-steel low temperature box containing a microscope was constructed.The box could be evacuated and was equipped with a stainless-steel cylinder that could reserve ca 500 ml liquid nitrogen.The liquid nitrogen flows from this cylinder to a specially designed cooling stage of the microscope through a copper pipe.As the microscope a Nippon Kogaku POH polarizing microscope was used together with an Olympus MO 90 reflecting objective (90×) or a Zeiss-Jena reflecting objective (40×).
Using this apparatus, visible and ultraviolet absorption spectra of crystalline barium permanganate, potassium chromate, and potassium dichromate were measured at room temperature and at low temperature (90 K).Spectra obtained at the low temperature were much better resolved than those obtained at room temperature and the lower energy band of potassium dichromate was split into two bands.Maxima of the absorption bands were shifted to the blue and their half-widths decreased, in crystals compared to those in solution and also in crystals at the low temperature compared to those at room temperature.View full abstractDownload PDF (770K) -
Yoshiaki TSUNAWAKI, Hiroshi YOSHINAGA1973 Volume 22 Issue 3 Pages 156-161
Published: June 30, 1973
Released on J-STAGE: June 28, 2010
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[in Japanese], [in Japanese]1973 Volume 22 Issue 3 Pages 163-164
Published: June 30, 1973
Released on J-STAGE: June 28, 2010
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[in Japanese]1973 Volume 22 Issue 3 Pages 165
Published: June 30, 1973
Released on J-STAGE: June 28, 2010
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1973 Volume 22 Issue 3 Pages 166
Published: June 30, 1973
Released on J-STAGE: June 28, 2010
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(3) Standard Radiation SourceSeiji TAKATA1973 Volume 22 Issue 3 Pages 167-183
Published: June 30, 1973
Released on J-STAGE: June 28, 2010
JOURNAL FREE ACCESSDownload PDF (2623K)
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